 .cen_btn {
   position: absolute;
   width: 50%;
   height: 70px;
   bottom: 30px;
   background: url('../../assets/image/navbar.png') no-repeat 0 0 /600px 70px;
   padding-left: 10%;
   margin-left: -5%;
   .itemBox {
    //  display: block;
    float: left;
    //  margin-left: 30px;
     .imgs {
       width: 70px;
       height: 70px;
     }
   }
 }